Prothena shares owned by Susquehanna International
Quarter-by-quarter ownership of Prothena (PRTA) shares owned by Susquehanna International
from 13F filings
Historical chart of Susquehanna International investment in Prothena
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All positions including Prothena held by Susquehanna International consolidated in one spreadsheet with up to 7 years of data
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Quarterly reported holdings in Prothena by Susquehanna International
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2025-09-30 | $12M | 1.3M | 9.76 |
| 2025-06-30 | $5.8M | 955k | 6.07 |
| 2025-03-31 | $1.7M | 135k | 12.38 |
| 2024-12-31 | $4.4M | 321k | 13.85 |
| 2024-09-30 | $3.6M | 216k | 16.73 |
| 2024-06-30 | $2.5M | 121k | 20.64 |
| 2024-03-31 | $6.1M | 247k | 24.77 |
| 2023-09-30 | $4.9M | 102k | 48.25 |
| 2023-06-30 | $13M | 187k | 68.28 |
| 2023-03-31 | $8.1M | 166k | 48.47 |
| 2022-12-31 | $12M | 195k | 60.25 |
| 2022-09-30 | $20M | 333k | 60.52 |
| 2022-06-30 | $5.5M | 204k | 27.14 |
| 2022-03-31 | $4.0M | 111k | 36.58 |
| 2021-12-31 | $12M | 235k | 49.32 |
| 2021-09-30 | $13M | 175k | 71.21 |
| 2021-06-30 | $8.1M | 158k | 51.39 |
| 2021-03-31 | $4.9M | 195k | 25.15 |
| 2020-12-31 | $1.1M | 95k | 12.01 |
| 2020-09-30 | $1.6M | 161k | 9.99 |
| 2020-06-30 | $1.3M | 124k | 10.47 |
| 2020-03-31 | $1.0M | 95k | 10.70 |
| 2019-12-31 | $873k | 55k | 15.82 |
| 2019-09-30 | $1.2M | 148k | 7.85 |
| 2019-06-30 | $1.3M | 123k | 10.57 |
| 2019-03-31 | $570k | 47k | 12.13 |
| 2018-12-31 | $3.6M | 346k | 10.30 |
| 2018-09-30 | $2.5M | 195k | 13.08 |
| 2018-06-30 | $2.6M | 177k | 14.58 |
| 2018-03-31 | $17M | 473k | 36.70 |
| 2017-12-31 | $6.0M | 160k | 37.49 |
| 2017-09-30 | $9.1M | 140k | 64.77 |
| 2017-06-30 | $9.6M | 177k | 54.11 |
| 2017-03-31 | $16M | 285k | 55.80 |
| 2016-12-31 | $7.2M | 146k | 49.19 |
| 2016-09-30 | $6.1M | 101k | 59.97 |
| 2016-06-30 | $8.6M | 247k | 34.97 |
| 2016-03-31 | $9.0M | 220k | 41.16 |
| 2015-12-31 | $14M | 204k | 68.07 |
| 2015-09-30 | $10M | 229k | 45.33 |
| 2015-06-30 | $8.9M | 168k | 52.67 |
| 2015-03-31 | $10M | 266k | 38.07 |
| 2014-12-31 | $4.4M | 213k | 20.76 |
| 2014-09-30 | $8.3M | 377k | 22.16 |
| 2014-06-30 | $5.3M | 234k | 22.58 |
| 2014-03-31 | $3.8M | 99k | 38.30 |
| 2013-12-31 | $2.2M | 84k | 26.47 |
| 2013-09-30 | $421k | 21k | 20.22 |
| 2013-06-30 | $269k | 21k | 12.92 |